816671929038 has 48 divisors (see below), whose sum is σ = 1900088087040. Its totient is φ = 233325522864.

The previous prime is 816671929019. The next prime is 816671929043. The reversal of 816671929038 is 830929176618.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11205945 + ... + 11278587.

It is an arithmetic number, because the mean of its divisors is an integer number (39585168480).

Almost surely, 2^816671929038 is an apocalyptic number.

816671929038 is an abundant number, since it is smaller than the sum of its proper divisors (1083416158002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816671929038 is a wasteful number, since it uses less digits than its factorization.

816671929038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110901 (or 110894 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 816671929038 in words is "eight hundred sixteen billion, six hundred seventy-one million, nine hundred twenty-nine thousand, thirty-eight".